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Kraft paper bags are non-toxic, tasteless, pollution-free, in line with environmental standards, with high strength, high environmental protection, is one of the most popular international environmental protection packaging materials. Kraft paper bags made from kraft paper are being used more and more widely, in supermarkets, shopping malls, shoe shops, clothing shops, and other places to shop, there is usually a supply of packaging bags, which is convenient for customers to carry their purchases. Kraft paper bags are environmentally friendly packaging bags with a wide variety.

Here is the content list:

• What materials are kraft paper bags made of?

• Where can kraft paper bags be used?

• How can kraft paper bags be classified?

What materials are kraft paper bags made of?

Kraft paper bags are a composite material or pure kraft paper packaging containers, non-toxic, tasteless, pollution-free, low-carbon environmental protection, in line with national environmental standards, with high strength, high environmental protection is one of the most popular international environmental protection packaging materials.

The packaging bag is made of full wood pulp paper as the base material, the color is divided into white kraft paper and yellow kraft paper, PP material can be used on the paper to laminate a layer of film, to play a waterproof role, the strength of the bag can be made according to customer requirements from one to six layers, printing, and bag making integration. The opening and bottom sealing methods are divided into heat sealing, paper sealing, and glued bottom.

Where can kraft paper bags be used?

The kraft paper bag can be used in a wide range of applications, it can be used as a packaging bag or simply to hold some common materials, such as chemical materials, food, pharmaceutical additives, construction materials, etc. At the same time, being used as a paper shopping bag is its most common use, and can be used for supermarket shopping, clothing, and other industries where kraft paper bags are suitable for packaging.

How can kraft paper bags be classified?

(1) according to the material can be divided into a. pure kraft paper bags; b. paper and aluminum composite kraft paper bags (kraft paper composite aluminum foil); c: woven bags composite kraft paper bags (general bag type larger)

(2) according to the bag type can be divided into a. three-side seal kraft paper bags; b. side organ kraft paper bags; c. self-standing kraft paper bags; d. zip kraft paper bags; e. self-standing zip kraft paper bags

(3) According to the appearance of the bag type can be divided into a. valve bag; b. square bottom bag; c. sewing bottom bag; d. heat sealing pocket; e. heat sealing square bottom bag

Nanjing Lippincott Ltd. brings together a wide range of packaging products, especially paper packaging products, covering kraft paper bags, luxury paper bags, and more. The company has a professional production team and produces all products with excellent quality. It has exported to more than 150 countries around the world and has helped more than 800 brands in brand development and promotion. If you are engaged in the kraft paper bag business, you can consider using our cost-effective products.

In addition to protecting goods and facilitating storage and transportation, cardboard paper boxes also play the role of beautifying and promoting goods. Cardboard paper boxes belong to green products, it is conducive to environmental protection, loading, and unloading transportation. The next will provide you with a detailed introduction to cardboard paper boxes.

Here is the table of contents:

• How is the strength of cardboard paper boxes designed?

• What are the design principles of the cardboard paper box?

  
  

How is the strength of cardboard paper boxes designed?

1. Side compression strength = surface raw paper comprehensive ring compression strength + comprehensive corrugated paper ring compression strength * shrinkage rate general side pressure calculation according to the lowest ring compression strength of raw paper (safe and reliable), the actual test value will be appropriately greater than the theoretical calculation value.

2. Breaking strength: The maximum external force that a unit area of corrugated board can withstand before rupture is uniformly increased. Unit: Kg/cm2.

Cardboard paper box rupture strength = face paper rupture strength + middle grid paper rupture strength + bottom paper rupture strength

4. Side compression, breakage resistance, puncture with cardboard. Cardboard paper box edge compression strength will be lower than the cardboard edge compression strength (due to the loss of corrugated in the manufacturing process).

5. Cardboard paper box compressive strength = side compression strength (N/cm) * Calicut constant F. The F value depends on the perimeter length of the cardboard paper box, 2*(length + width) cm. and the corrugated flute type.

6. The compressive strength of cardboard paper box = corresponding to the compressive strength of ordinary box type * 0.6 * 1.62 * shaking cover width/carton width.

7. Cardboard paper boxes, cardboard bonding strength. As with corrugated paper boxes, the force is required to separate the unit length of cardboard face paper from the corrugated paper. Unit: N / m flute.

8. Stacking strength and compressive strength.

The required compressive strength of a cardboard paper box = [gross weight of the box * (stacking layers - 1)] * safety factor K. The former part is the static stacking strength of the cardboard paper box.

What are the design principles of the cardboard paper box?

Cardboard paper box structure design is from the actual conditions of packaging and production, based on scientific principles of the packaging shape structure and internal accessories for the design. Design must ensure that the structure has sufficient strength, hardness, and the ability to resist other environments.

Qualified cardboard paper box products start with the right structural design. Designers must not only truly understand the customer's intent, but also be familiar with the post-processing process. Designers should understand the nature, shape, size, and weight of the cardboard paper box contents, the arrangement, transportation, and stacking of the contents, the storage environment of the contents, the transportation route and time, as well as the carton box type and production materials before the design begins. Designers in determining the size of the cardboard paper box are mainly to consider two factors: one is to be able to accommodate the contents; the second is to have sufficient strength. Just like the extensions box, it's internal how can contain enough items on how to design. The constraints of the cardboard paper box size and shape of the factors in addition to the contents of the package, there are many other factors, such as ergonomic factors, the size of the pallet, the size of the truck car, the size of the container space, with the size of the shelf size. Only when the design is carried out so meticulously will it be possible to have holographic paper boxes in the future.

Nanjing Lipack Co., Ltd. will provide comprehensive, full, and precise services for target customers is the customer to get greater value-added and create a win-win situation with customers. At the same time, we need to keep innovating, keep pace with advanced technology, and manufacture new concepts of cardboard paper boxes to serve society.

Nanjing Lipack Co.,Ltd is a collection of all range of packaging products, especially paper packaging products, which including Kraft paper bags, Luxury paper bag ,paper box, paper labels & stickers, paper tags, bubble bags, poly bags, paper tags… we have a professional team committed to quality control and constantly strive for excellence. We provide customized “one stop” packaging solutions, from initial design and to final packaging delivery. We have all the systems in place to produce the highest quality, most impactful packaging, and fast delivery. Click professional team, manufacturing process & quality control to see more about this.

We are headquartered in Nanjing China, and have three manufacturing facilities across China.

The kraft paper bag is a great paper bag that can be reused and has good support properties and does not break easily. Because of their environmental characteristics, kraft paper bags can also be used as paper shopping bags, which are favored by all, especially in European countries where kraft paper bags are almost always used.

Here is the content list:

• Do Kraft paper bags have several practices?

• What are the performance parameters of kraft paper bags?

Do Kraft paper bags have several practices?

(1) small white kraft paper bags, the general number of such bags, the use of a wide range, many customers require such cheap and durable kraft paper bags, usually the practice of such kraft paper bags are machine forming, machine laminated rope, completely by the machine operation.

(2) the practice of medium-sized kraft paper bags, usually, medium-sized packaging bags are machine laminated molding after the human hand sticker rope and made into kraft paper bags, due to kraft paper bag forming equipment by forming size restrictions, and kraft paper bag sticker rope machine can only stick smaller handbag rope, so the practice of kraft paper bags by the limitations of the machine. Many of the bags do not have the means for the machine to complete the sole production, still have to go through manual production.

(3) large bags, with reverse-head kraft paper bags, thicker yellow kraft paper bags, the practice of these kraft paper bags to be built purely by hand, to ensure quality, these types of kraft paper bags can not yet be put into machine production, these types of kraft paper bags production costs are higher, but also very strong, good quality.

(4) regardless of which kraft paper bags are above, if the number is not large enough, generally used purely handmade, because of the machine production of kraft paper bags loss, there is no way to solve the practice of small quantities of medium-sized packaging bags.

What are the performance parameters of kraft paper bags?

(1) Printing: Offset printing, CMYK printing, screen printing

(2) Handle material: twist paper handle bag

(3) Surface treatment: silver print, gold print, embossed or embossed, spot UV, varnish, matt laminate, gold laminate

(4) Size: custom made

(5) Shapes: flat pockets, square bottom open pockets, square bottom valve pockets, one-piece glued bottom bags (for food packaging)

(6) Material: polypropylene, kraft paper, aluminum foil

(7) Stitching method: paper sealed bottom, heat-sealed bottom, glued bottom.

Nanjing Lipack Co., Ltd is dedicated to the production of kraft paper bags that can be used as paper shopping bags. The company has a team of professionals dedicated to quality control and the continuous pursuit of excellence. At the same time, the company offers bespoke 'one-stop' packaging solutions, from initial design to final packaging delivery, having all the systems in place to produce the highest quality, most impactful packaging that can be delivered quickly. If you are engaged in the kraft paper bag business, you can consider using our cost-effective products.